MESON Chess Problem Database

Problem Display
PID: 18413 (2KB4/8/2pQp2p/2r2k2/5N2/2N1pP2/bbR3r1/1B6 w - - 0 1)

Mansfield, Comins

The Tablet, 1955

(First published on Sat Jul 9 1955)

2KB4/8/2pQp2p/2r2k2/5N2/2N1pP2/bbR3r1/1B6

#2

8 + 9

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc2
      • 2.Bxc2#
    • 1...Re5
      • 2.Qf8#
    • 1...e5
      • 2.Qf6#
  • Tries
    • 1.Rc1+?
      • 1...Rc2
        • 2.Bxc2#
      • 1...Bxb1!
    • 1.Rxb2+?
      • 1...Rc2
        • 2.Bxc2#
      • 1...Bxb1!
    • 1.Qd4?
      • threat
        • 2.Qf6#
        • 2.Qe4#
      • 1...Bxc3
        • 2.Qe4#
      • 1...Rc4
        • 2.Qf6#
      • 1...Rg6
        • 2.Qe4#
      • 1...Bd5
        • 2.Qf6#
      • 1...e5
        • 2.Qe4#
      • 1...Re5!
  • Keys
    • 1.Sce2!
      • threat
        • 2.Rxc5#
      • 1...Rxc2
        • 2.Bxc2#
      • 1...Bxb1
        • 2.Qxe6#
      • 1...Rc3
        • 2.Sd4#
      • 1...Rc4
        • 2.Qxe6#
      • 1...Ra5
        • 2.Rc5#
      • 1...Rb5
        • 2.Rc5#
      • 1...Rd5
        • 2.Qxe6#
      • 1...Re5
        • 2.Qf8#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bc3
        • 2.Rxa2#
      • 1...Be5
        • 2.Qd3#
      • 1...e5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • R(c);OGATE,P_SPINR(c),XR(B)::B(A),XR(c)
    • R(e);SBLOCK::QAR(F)
    • P(h);OGATE::QAR1(F)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(A),XR(c)
      • Refutation
        • B(a);XB(A)
    • Try
      • R(B);CHECK,XB(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::B(A),XR(c)
      • Refutation
        • B(a);XB(A)
    • Try
      • Q(F);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);XS(C)::QAB1(F)
        • R(e);::QAR1(F)
        • R(c);::QAB1(F)
        • B(a);::QAR1(F)
        • P(h);::QAB1(F)
      • Refutation
        • R(e);
  • Actual
    • S(C);
    • Threat
      • B(A)+R(B),DCHECK,XR(e)
    • Vars
      • R(e);OGATE,P_SPINR(e),XR(B)::B(A),XR(e)
      • B(a);N_GUARD,XB(A)::QAB1(F),XP(h)
      • R(e);S_CUTB(b)::S(C)
      • R(e);S_CUTB(a)::QAB1(F),XP(h)
      • R(e);::B(A)+R(B),DCHECK
      • R(e);SBLOCK,S_CUTB(b)::QAR(F)
      • B(a);N_GUARD::B(A)+R(B),XB(a)
      • B(b);OGATE::B(A)+R(B),XB(a)
      • B(b);SBLOCK::QAB(F)
      • P(h);OGATE::QAR1(F)
HTML5 logo

Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) & CSS/Javascript (jQuery, Bootstrap & DataTables).